desktop/screensaver help, maybe new idea

I've been going through all my pictures and adding keywords to my "spotlight comments" info tags. My background and screensaver cycles through pictures that I copy over to a specific folder. Is there anyway that I can have the option to just add what kind of pictures I want them to cycle through based on key words?

I.E. if I just want beach themes I just type the beach keyword and every picture I have that deal with beach with cycle through.

well i've tried to make a smart folder but how do i make it include multiple images. lets say i want the folder to have all the pictures of my friend x and my friend y, not just the pictures with both of them in it.

i added a spotlight comment that contains my friends x name but when i add another spotlight comment with my friend y's name it only puts the pictures with the comments that have both names in it.

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